A source confirmed to ABC7 News the weapon used in the murder of Oakland muralist Antonio Ramos was a gun stolen from the vehicle of an Immigration and Customs Enforcement agent. However, appears the man charged with the murder is not the man who stole the gun.

On Sept. 13, a law enforcement officer reported their car had been broken into and a gun stolen at 2nd and South Park streets in San Francisco. ICE has confirmed a duty weapon was stolen from one of its officer's vehicles on that date.

Sean Gibson was arrested for the car burglary and a police source says the gun ended up in the hands of 20-year-old Marquise Holloway.

Holloway is accused of fatally shooting Ramos, a 27-year-old muralist, on Sept. 29, 2015. According to court documents, Holloway admits shooting at Ramos, but says it was an accident.

Ramos was working on a peace mural underneath the Interstate 580 freeway. Ramos was with a group of 10 artists working on six murals being produced by ArtEsteem, a group that seeks to stop violence by inspiring people with art and education.

Investigators said the murder was sparked by an argument after Holloway made a move toward Ramos' cameras. "He was painting the mural and had taken a break and was taking pictures to memorialize it," Oakland Police Department Lt. Roland Holmgren said.

Oakland police said U.S. Marshals and the FBI tracked Holloway to his mother's house in Stockton and arrested him Friday.

In addition to the murder, he's charged with several street crimes, including an attempted robbery earlier the morning Ramos was killed. And one robbery in which a TV crew's cameras were taken.

Investigators said the surveillance photo they released after the high profile murder of a person of interest in the case helped lead to the arrest.

On Tuesday, the mayor expressed condolences to the Ramos family. "An incredibly beautiful family that is enduring so much grief. I hope today's announcement brings them a small measure of comfort," Oakland Mayor Libby Schaaf said.

As for Holloway's family and friends, they left the court in anger, shattering a glass case in the hallway.

Holloway is expected back in court November 30 and will be assigned a public defender.